It's quite easy for a developed player of the server, it is not, however, for a newly joined player who does not give a rats behind about the state of The End.
IMO, the right to use The End should be earned. Earned through gathering these materials required to locate The End's portal.
It's through gathering these materials the player will appreciate and refrain from abuse.
With random new players running willy nilly in and out of the The End it is no longer something special to those who took the time to find the portal legitimately and the island itself, I expect, will be ruined in no time at all.